O2 5G
O2 today turned on 5G in Belfast, Cardiff, Edinburgh, London, Slough and Leeds with a promise to have 20 total locations by the end of 2019. It offers four 5G phones, the Samsung Galaxy S10 5G, Samsung Galaxy Note 10 Plus 5G, Samsung Galaxy A90 5G and the Xiaomi Mi Mix 3 5G.
EE
Three UK launched its 5G service in London earlier today, promptly causing EE to file a complaint with the Advertising Standards Authority (ASA) claiming that its slogan, "If it's not Three, it's not real 5G", is misleading. EE is seeking a ban on the ads because they clearly imply that alternative networks' 5G are inferior by comparison.